title: [Intraoperative coronary spasm in patients without a history of anginal chest pain].
mesh_terms: D000368:Aged; D000768:Anesthesia, General / Q000009:adverse effects; D000787:Angina Pectoris; D002637:Chest Pain; D003329:Coronary Vasospasm / Q000209:etiology* / Q000517:prevention & control; D004562:Electrocardiography; D005260:Female; D006801:Humans; D006985:Hyperventilation / Q000150:complications; D007431:Intraoperative Complications / Q000209:etiology*; D008297:Male; D008487:Medical History Taking; D008875:Middle Aged